One question: How much there was left on that tomelith? if it was 20% or less then they made right choice and abandoned it instead of feeding points, now if it was pretty fresh then they were pussies. In 72mans its sometimes better to do a tome change if you get zerged by whole enemy team while you have only one party, just back off and flank their tome instead of trying to defend yours, this also makes them run between tomes if they want to have both(maximumovertroll).